LABORATORY TECHNIQUES EXAMINATION QUESTIONS
AND CORRECT ANSWER WITH EXPLANATION GRADED
A+ STUDY GUIDE SOUTHERN NEW HAMPSHIRE
UNIVERSITY
1. A laboratory is primarily used for:
A. Scientific experiments and analysis
B. Farming only
C. Construction work only
D. Transportation only
Answer: A
Rationale: Laboratories support scientific investigation and testing.
2. Personal protective equipment (PPE) includes:
A. Gloves, goggles, and lab coats
B. Books and pencils
C. Computers only
D. Microscopes only
Answer: A
Rationale: PPE protects workers from hazards.
3. Safety goggles are worn to protect the:
A. Eyes
B. Ears
C. Hands
D. Feet
Answer: A
Rationale: Prevents chemical or biological eye injury.
4. A lab coat is used to:
A. Protect clothing and skin
B. Increase temperature only
C. Measure chemicals
D. Sterilize equipment
Answer: A
Rationale: Reduces exposure to spills and contamination.
,5. The most important rule in a laboratory is to:
A. Follow safety procedures
B. Eat during experiments
C. Ignore instructions
D. Work alone always
Answer: A
Rationale: Safety is essential in laboratories.
6. Chemicals should be labeled to indicate:
A. Identity and hazards
B. Color only
C. Price only
D. Weight only
Answer: A
Rationale: Proper labeling prevents accidents.
7. A fume hood is used to:
A. Remove hazardous vapors
B. Heat chemicals only
C. Store food
D. Wash glassware
Answer: A
Rationale: Protects users from toxic fumes.
8. The device used to measure mass is a:
A. Balance
B. Thermometer
C. Microscope
D. Pipette
Answer: A
Rationale: Balances determine mass accurately.
9. A graduated cylinder is used to measure:
A. Liquid volume
B. Temperature
C. Mass
D. Pressure
Answer: A
Rationale: Designed for measuring liquids.
, 10. A pipette is used to:
A. Transfer small volumes of liquid
B. Measure mass
C. Heat solutions
D. Filter particles
Answer: A
Rationale: Pipettes handle precise liquid volumes.
11. Micropipettes are commonly used in:
A. Molecular biology laboratories
B. Carpentry workshops
C. Astronomy labs only
D. Mining operations
Answer: A
Rationale: Handle very small liquid volumes.
12. A burette is commonly used in:
A. Titration experiments
B. Heating chemicals
C. Weighing solids
D. Sterilizing instruments
Answer: A
Rationale: Delivers precise liquid volumes.
13. Titration is used to determine:
A. Concentration of a solution
B. Weight of gases
C. Boiling point only
D. Electrical current only
Answer: A
Rationale: Quantitative analytical technique.
14. An indicator in titration changes color at the:
A. Endpoint
B. Freezing point
C. Starting point only
D. Neutral point only
Answer: A
Rationale: Signals completion of reaction.
AND CORRECT ANSWER WITH EXPLANATION GRADED
A+ STUDY GUIDE SOUTHERN NEW HAMPSHIRE
UNIVERSITY
1. A laboratory is primarily used for:
A. Scientific experiments and analysis
B. Farming only
C. Construction work only
D. Transportation only
Answer: A
Rationale: Laboratories support scientific investigation and testing.
2. Personal protective equipment (PPE) includes:
A. Gloves, goggles, and lab coats
B. Books and pencils
C. Computers only
D. Microscopes only
Answer: A
Rationale: PPE protects workers from hazards.
3. Safety goggles are worn to protect the:
A. Eyes
B. Ears
C. Hands
D. Feet
Answer: A
Rationale: Prevents chemical or biological eye injury.
4. A lab coat is used to:
A. Protect clothing and skin
B. Increase temperature only
C. Measure chemicals
D. Sterilize equipment
Answer: A
Rationale: Reduces exposure to spills and contamination.
,5. The most important rule in a laboratory is to:
A. Follow safety procedures
B. Eat during experiments
C. Ignore instructions
D. Work alone always
Answer: A
Rationale: Safety is essential in laboratories.
6. Chemicals should be labeled to indicate:
A. Identity and hazards
B. Color only
C. Price only
D. Weight only
Answer: A
Rationale: Proper labeling prevents accidents.
7. A fume hood is used to:
A. Remove hazardous vapors
B. Heat chemicals only
C. Store food
D. Wash glassware
Answer: A
Rationale: Protects users from toxic fumes.
8. The device used to measure mass is a:
A. Balance
B. Thermometer
C. Microscope
D. Pipette
Answer: A
Rationale: Balances determine mass accurately.
9. A graduated cylinder is used to measure:
A. Liquid volume
B. Temperature
C. Mass
D. Pressure
Answer: A
Rationale: Designed for measuring liquids.
, 10. A pipette is used to:
A. Transfer small volumes of liquid
B. Measure mass
C. Heat solutions
D. Filter particles
Answer: A
Rationale: Pipettes handle precise liquid volumes.
11. Micropipettes are commonly used in:
A. Molecular biology laboratories
B. Carpentry workshops
C. Astronomy labs only
D. Mining operations
Answer: A
Rationale: Handle very small liquid volumes.
12. A burette is commonly used in:
A. Titration experiments
B. Heating chemicals
C. Weighing solids
D. Sterilizing instruments
Answer: A
Rationale: Delivers precise liquid volumes.
13. Titration is used to determine:
A. Concentration of a solution
B. Weight of gases
C. Boiling point only
D. Electrical current only
Answer: A
Rationale: Quantitative analytical technique.
14. An indicator in titration changes color at the:
A. Endpoint
B. Freezing point
C. Starting point only
D. Neutral point only
Answer: A
Rationale: Signals completion of reaction.
